Niagara Mohawk Power Corporation is engaged principally in the regulated energy delivery business. The Company provides electric service to approximately 1,500,000 electric customers in the areas of eastern, central, northern and western New York and sells, distributes, and transports natural gas to approximately 571,000 gas customers in areas of central, northern and eastern New York. Niagara Mohawk Holdings, Inc. (Holdings), the parent company of the Company, is a wholly owned subsidiary of National Grid USA (National Grid). National Grid is a wholly owned subsidiary of National Grid plc. As of March 31, 2007, the Company had approximately 53,000 pole miles of transmission and distribution lines for electricity delivery. The majority of its gas sales are for residential and commercial space heating. The Company purchases its natural gas under firm supply agreements.